From the super informative Reusable Bags Newsletter...
One high-quality reusable bag can eliminate as many as 1500 plastic bags from landfills in its lifetime, making reusable bags an easy way to consume less.
* Many stores offer a discount on groceries as an incentive to bring your own bag. Some stores offer as much as $0.10 off per bag you bring — that adds up!
* A well-made bag can last years and years, which means you can buy fewer of them. ACME Bags™ come with a Lifetime Warranty, which makes them a great investment.
* Bringing your own bag can help you shop smarter, opting for items with less packaging which are generally less expensive.
* Reuse the plastic bags you do receive as small waste bin liners, pet refuse bags or to cushion breakables when moving or shipping. Store them neatly in a Recycled PET Stuff Sack.